Valve components

Abstract

A first valve component (10), in particular a pressure compensator component, has a valve slide (16) that can be guided in a valve housing (12) in a longitudinal direction. The valve slide has a control part (34) controlling a fluid-conducting connection (28) between at least two fluid connection points (30, 32) in the valve housing (12). The control part has at least one pocket-shaped recess (38), at least part of which is bordered by a fluid-guiding surface (40) extending at least between two vertices of the recess and extending with increasing inclination from one vertex to another vertex. Starting from a predeterminable distance before the other vertex, the fluid-guiding surface (40) extends from its point of greatest inclination with decreasing inclination in the direction of the other vertex.

The invention claimed is: 
     
       1. A pressure maintenance valve component, comprising:
 a valve housing having first and second fluid-conducting connection points in said valve housing; 
 a valve slide movably guided in a longitudinal direction in said valve housing; and 
 a first control part on said valve slide, said first control part having a first pocket-shaped recess at least partially bordered by a fluid-guiding surface, said recess having first and second vertices, said fluid-guiding surface extending between said first and second vertices of said recess and having a slope decreasing from said second vertex to said first vertex starting from a predeterminable distance from said second vertex at a point of said fluid-guiding surface having a greatest slope thereof, said fluid-guiding surface extending from said first vertex to said second vertex only and continuously having a decreasing slope along an entire extent thereof from the predetermined distance from said second vertex at the point of greatest slope to said first vertex. 
 
     
     
       2. A pressure maintenance valve component according to  claim 1  wherein
 said fluid-guiding surface has a continuous progression and a minimal slope at said second vertex. 
 
     
     
       3. A pressure maintenance valve component according to  claim 2  wherein
 said minimal slope is zero. 
 
     
     
       4. A pressure maintenance valve component according to  claim 1  wherein
 said fluid-guiding surface has a curved configuration and has different gradients between said first and second vertices formed by transitions from a concave curve progression to a convex curve progression. 
 
     
     
       5. A pressure maintenance valve component according to  claim 1  wherein
 a plurality of pocket-shaped recesses have same configurations as said first pocket-shaped recess and are arranged along an outer periphery of said first surface of said first control part on said valve slide, fluid-guiding surfaces of said plurality of pocket-shaped recesses extending between first and second vertices of said plurality of pocket-shaped recesses forming at least one of a closed sine or cosine curve progression along said outer periphery. 
 
     
     
       6. A pressure maintenance valve component according to  claim 5  wherein
 a groove-shaped recess in only selected ones of said pocket-shaped recesses along a repeating pattern, each said groove-shaped recess being in a floor of the respective pocket-shaped recess in a region of said second vertex thereof and deviating from said closed sine or cosine curve progression. 
 
     
     
       7. A pressure maintenance valve component according to  claim 5  wherein
 each of said pocket-shaped recesses has a largest opening cross section thereof oriented to said second fluid-conducting point serving as a fluid inlet of said valve housing. 
 
     
     
       8. A pressure maintenance valve component according to  claim 1  wherein
 said first pocket-shaped recess is on an axially facing first surface of said control part; and 
 an axially facing second surface on said control part opposite said first surface is flat.